Warrants - Fair Value of Warrant Liabilities (Details)	6 Months Ended
Jun. 30, 2017
Black Scholes
Fair value assumptions and methodology for assets and liabilities
Dividend yield	0.00%
Monte Carlo Simulation Model
Fair value assumptions and methodology for assets and liabilities
Dividend yield	0.00%
Minimum \| Black Scholes
Fair value assumptions and methodology for assets and liabilities
Expected volatility	92.40%
Risk-free interest rate	1.33%
Expected life in years	2 years 3 months 18 days
Minimum \| Monte Carlo Simulation Model
Fair value assumptions and methodology for assets and liabilities
Expected volatility	91.30%
Risk-free interest rate	1.24%
Expected life in years	1 year 1 month 6 days
Maximum \| Black Scholes
Fair value assumptions and methodology for assets and liabilities
Expected volatility	101.50%
Risk-free interest rate	1.80%
Expected life in years	4 years 6 months
Maximum \| Monte Carlo Simulation Model
Fair value assumptions and methodology for assets and liabilities
Expected volatility	106.20%
Risk-free interest rate	1.44%
Expected life in years	2 years 4 months 24 days

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- Definition

Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price.

+ References

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- Definition

Risk-free interest rate assumption used in valuing an instrument.

+ References

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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